Scientific Anglers fly line backing is extremely thin has a low coefficient of friction high abrasion resistance is colorfast and has high visibility. Fly line backing is what goes on your fly reel before the fly line itself. Usually 100 to 300 yards of backing is used but check with your fly reel manufacturer for the rmended amount specific to your fly reel.
Scientific Anglers Dacron Backing in Chartreuse (Neon Yellow) 30lb - 2
Back it up!
Scientific Anglers Dacron Backing 20 lb
Scientific Anglers Dacron Fly Line Backing 30lb 100-yrds
Made of low stretch Dacron, it won't damage your reel when wound in under the pressure of a big fish. Available in 20# test for most applications.
Scientific Anglers Backing Dacron Fly Line, 20 lb/250 yd, Yellow
Guideline Braided Dacron Backing 20 lbs from Spool - adh-fishing
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Scientific Anglers Backing Dacron Fly Line, 20 lb/250 yd, Yellow
Backing doesn't just connect your fly line to your reel; it also provides insurance for those drag-blistering runs of Steelhead or bonefish. Our
Scientific Anglers Backing Dacron Fly Line, 20 lb/250 yd, Yellow
RIO Fly Line Backing - Dacron - Fishing